<template>
  <div class="app">
    <h3>我是App组件（祖）</h3>
    <Child />
  </div>
</template>

<script>
import { reactive, toRefs, provide } from 'vue'
import Child from './components/Child.vue';


export default {
  name: 'App',
  components: {Child},
  setup() {
    
  }
}
</script>

<style>
.app {
  padding: 10px;
  background-color: gray;
}
</style>
